Dyfyniad APA

Butler, A., & Knight, C. (2007). Who built the moon? Watkins.

Dyfyniad Arddull Chicago

Butler, Alan, and Christopher Knight. Who Built the Moon? London: Watkins, 2007.

Dyfyniad MLA

Butler, Alan, and Christopher Knight. Who Built the Moon? Watkins, 2007.

Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.